A man rakes muck out of open sewer outside microloan beneficiary Roseline Amondi's small restaurant in the Kibera slum, Nairobi, Kenya. (Roseline Amondi is featured in the book What I Eat: Around the World in 80 Diets.) The raking of muck raises the level of the street over time. Trash is also burned in the dirt street, as the streets and alley are too narrow for garbage collection, and even fire engines, raising the risk of huge slum fires. Kibera is Africa's biggest slum with nearly one million inhabitants.